3D打印技术可以快速精确制备复杂结构组件,将其应用于碳纤维吸波材料制备是国内外新兴的研究方向。将不同比例的丙烯腈-丁二烯-苯乙烯三元共聚物(ABS)与热塑性聚氨酯弹性体(TPU)共混作为基体树脂材料,通过添加碳纤维(CF)制备了3D打印用TPU-ABS/CF复合吸波丝材,对共混树脂材料加入CF后的成型性能进行了评价,并探究了CF含量与吸波性能之间的关系。结果表明:将TPU与ABS共同作为基体树脂材料可大幅提高CF含量,当ABS与TPU质量比为2∶8时复合吸波丝材成型性能最好;CF质量分数为20%时,厚度为1mm的复合薄板在X波动和Ku波段实现了-1dB有效带宽全覆盖。
3D printing's precision in crafting complex structures is driving innovations in carbon fiber absorbent materials,an emerging field in global research.Different proportions of acrylonitrile butadiene-styrene ternary copolymer (ABS) and thermoplastic polyurethane elastomer (TPU) were mixed as matrix resin materials,and TPU-ABS/CF composite absorber filaments for 3D printing were prepared by adding carbon fiber (CF).The molding properties of the blend resin materials after adding CF were evaluated.The relationship between CF content and absorption performance was also explored.The results showed that the content of CF could be greatly increased by using TPU and ABS as matrix resin,and the forming performance was the best when the mass ratio of ABS to TPU was 2∶8.When the CF mass fraction was 20%,the composite sheet with thickness of 1mm achieved full coverage of -1dB effective bandwidth in X and Ku bands.
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